A tubular shaped item with a round or hexagon peripheral shape having two flat bearing surfaces perpendicular to the axis of the centrally located hole. It is designed to maintain a predetermined distance between assembled parts. The item may be with or without flange(s) of any peripheral shape. The length must exceed 25 percent of the outside diameter or distance across peripheral flats. (when the length, outside diameter, and/or distance across peripheral flats are designated as a tolerance, the maximum dimension will be used to determine compliance.) it must have one or more internal steps (counterbores) and/or external steps on either or both bearing surfaces. Excludes spacer, optical element. See also washer, recessed and washer, shouldered and recessed.
Classification: Other articles of iron or steel not wire nesoi
NSN 5835-00-927-6013
NSN 5975-00-127-1321
NSN 5985-01-049-1998
NSN 6220-01-374-0792
NSN 5895-01-085-5471
NSN 5905-01-486-7812
NSN 5990-01-541-7671
NSN 5835-01-352-7211
NSN 5910-01-483-6282
NSN 6150-01-471-3132
NSN 6130-00-936-8055
NSN 6145-01-234-6615